Dear Sir/Madam, One of our faculty needs the following article for his research purpose. If anybody has access to it, please share it with my email. Proceedings Volume 1456, Large Screen Projection, Avionic, and Helmet-Mounted Displays; https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1456.toc (1991) https://doi.org/10.1117/12.45426 with regards, *Dr. *C T *Kantharaja* *Librarian,Cambridge Institute of Technology,K.R.Puram, Bengaluru-560036.*